Motor.



F. H. FERAUD.

MOTOR.

APPLlcAloN FILED 00T. 26. 1914.

Patented Juno 6, 1916.

2 SHEET -SEET F. H. FERAUD.

MOTOR.

APPLICATION FILED OCT. 26. 1914.

1 ,1 85,648. Patented Jluw 6, 1916.

2 SHEETS-SHEET 2.

UNTTED STATES PATENT OFFICE.

FRANK H. FERAUD, 0F GRANITE CITY, ILLINOIS.

MOTOR.

Speciation of Letters Patent.

Patented June 6, 1916.

Application filed October 26, 19M. Serial No. 868,627.

others skilled in the art to which it apperl tains to make and use thesame.

This invention relates to motors, and more particularly to that c lassof motors that Vare employed for winding clocks, or for operating otherlight machinery, such as window-display novelties, etc. l

One object of my invention is to provide a motor of the class describedthatcan be successfully operated on a comparatively high voltagecurrent, either'alternating or direct, such as is supplied to consumersin cities by public service companies.

Other objects are to provide a motor of the class described that islight in weight, eicient and economical in operation, that is not liableto get out of order, and which comprises few simple parts that can beproduced at a low cost of manufacture.

Further objects and desirable features of my invention will behereinafter pointed out.

Figure l of the drawings is a side elevational view with part of theframework removed, illustrating a motor constructed in accordance withmy invention and o eratively connected to a clock train. Fig. -2 is afront elevational view thereof. Fig. 3 is a vertical sectional viewtaken approximately on the line 3 3 of Fig. 2, parts being broken away,so as to more clearly illustrate the invention. liig. i is a viewsimilar to lTig. 3, showing the moving parte of the motor in a dierentposition. 5 is a transverse sectional view taken approximately on theline 5 5 oit Fig. 2. d is a detail perspective view, iliustrating theprimary actuating member of' the motor' and its carried arts. Fig. ti isa detail sectional view te ren approximately on the line afof Fig. Fig.'E' is a side elevational view, illustrating a slightly inediti-ed formof my invention. Figs. 8 and 9J detail elevational views, illustratingferent forms of the primary actul member Fig. l@ is a diagrammatic view,illustrating the various electric elements and their connections.

Brieily described, my invention consists in a motor that is providedwith a rotatable driving element that is adapted to be suit ablyconnected to the work that is desired to be operated, a primaryactuating member for actuating said element, means for moving saidprimary actuating member in one direction in order to actuate saiddriving element, and electrical means for moving said member'V in theopposite direction so as to store up energy therein.

Referring to Figs. l to 6 of the drawings which illustrate the preferredform of my invention, A designates the frame of the motor in which isjournaled the main shaft B. The driving element that is adapted to beconnected to the work that is desired to be operated consists of apinion C having conjoined therewith a ratchet Wheel D, said elementbeing loosely mounted on the shaft B. The means for actuating the pinionC consists of an arm E, which l will term the primary actuating member othe motor, said arm being journaled on the shaft B adjacent the ratchetwheel D, and having arranged thereon a pawl l that engages thek teeth onthe periphery of said wheel. The pawl 1 preferably consists of a thinstrip of iexible material, such as spring metal that is securely clampedin position'on the arm E at the outer end thereof by any suitable means,such as lugs e that are bent over a Vprojecting portion of said pawl.The awl l is provided at its inner or tree end with an enlarged portioni that engages the teeth oi the ratchet wheel D, a part oi said portionl lying in a notch c2 -formed in an extension es oi the arm As shown inFigs. 6 and 6c, a shoulder `formed at the junction of the portion la andthe body portion of the pawl l engages the bottom of the notch e2, andthus prevents said pawl `from being distorted or from being forcedbackwardly out of engagement the ratchet wheel D, if, for anv reason,said ratchet wheel is given a retrograde movement.

The primary actuating member E is adapted to oscillate about the shaft Bas an movement one direction causing the pinion O to rotate through themedium of the pavsl and ratchet mechanism heretofore described,l andmovement in the opposite dig the pawl to ride freely over the teeth onratchet wheel l). Means is provided for causing said primary actuatingmember to more in a direction to rotam the pinion C, the means hereinshown consisting of a comparatively heavy coiled expansion spring F,having one end connected to sald member, and its opposite end securelyanchored to some stationary part of the frame A. I wish it to beunderstood, however, that my invention is not limited to use with aspring of the exact type shown, as various other types of springs couldbe successfully utilized to actuate the arm'E on its power stroke. Inorder to move the primary actuating member in a direction to store upenergy in the spring F, attached thereto, I provide said member with aplunger 2 that is yieldingly connected thereto in the manner to behereinafter described, and which is adapted to be pulled upwardly bymeans of an electro-magnetic coil or solenoid G that is suitablyconnected, as by means of brackets g tothe frame A. The solenoid G isenergized by a suitable source of electrical energy 4, which maybeeither alternating or direct current of a comparatively high'voltage,and means is provided for demagnetizing said solenoid for certainperiods of time during the cycle of operations of the motor.

, When the motor is idle the parts are in the position shown in Fig. 1,and when it is desired to operate said motor, the solenoid G isenergized by closing the circuit 4 and the magnetic force thereinlpullsthe plunger 2 upwardly and 'stores up energy in the spring F. Whenthe spring is wound up or energized, means is provided for automaticallybreaking the electric circuit of the solenoid G, so as to demagnetizesame and allow the primary actuating member E to move downwardly on itspower stroke to the position shown in Fig. 1, under the influence of thespring F, and thus impart rotary movement to the pinion C. As soon asthe actuating member E reaches the position shown in Fig. 1, that is,the end of its power stroke, means is provided for automaticallyenergizing the solenoid G, so that it willV again pull the plungerupwardly, and thus repeat the cycle of operations just described. Itwill thus be seen that the primaryl actuating member E is alternatelymoved in one direction about its axis by means of the solenoid G, and inthe opposite 'direction by means of the spring F, this latter movement,through the medium of the pawl 1 and ratchet wheel D, imparting anintermittent rotary movement to the pinion C. The means' for alternatelymaking and breaking the circuit that is con- .nected to thesolenoid G,as herein-shown,

preferably consists of a member 'provided with `an outwardly extendingprojection to which the plunger 2 is connected by means of a link 3, andsaid member is pivotally connectedat 6 to the primary actuating member Eand provided with av brush or shoe 7 that ccperates 'with a device 8that is arrangedv concentrically with respect to the a'Xis of the arm E.The brush'7 is loosely mounted on a pin 9 that is secured in a block ofinsulating material 10 that is fastened to the member 5, and a .flatleaf spring 7a bears against said brush so as 'to always tend to forcethe same inwardly.' The device 8 comprises two metallic contacts orsegments 8 that are spaced apart, and connected inthe circuit thatenergizes the solenoid G. When the motor is idle, or in the positionshown in Fig. 1, the brush 7 bridges the gap or space between the-segments 8, so that when the current is turned on the circuit iscompleted by passing from one segment to the other through the' brush 7and the solenoid G will be energized, and pull upwardly on the plunger2, the movement of the plunger upwardly causing the primary actuatingmember E and the member 5 carried thereby to move about` the shaft B, soas to store up energy in the spring F The plunger 2 being connected tothe member 5 aty a point outwardly -removed from the point at which saidmember is pivotally connected to thearm E, will, on its upward stroke,move the member 5 about the axis ofrotation of the arm and at the Sametime exert inward pressure on the brush 7,' so aS to keep the same inintimate engagement with the contact segments 8*. As soon as the-plungeris moved upwardly far enough to carry Lthe brush 7 past the spacebetween the segments 8, the circuit will be automatically broken and theprimary actuating member will be returned to its lowermost position onits power stroke under the influence of the spring F. As soon as the armE starts to move downwardly, the member 5 swings outwardly away from thesegments 8, owing to gravity, .or the preure .of the flat leaf spring 11that bears against a projection 12 on said member, said projection 12being arranged in a slot 12 formed in the arm E, so as to restrict themovement of the member 5 about its Vpivot point 6. Outward movement ofthe member 5 carries the brush 7 away from the segments 8,as shownclearly in Fig. 4, and said. brush is held out of contact therewithuntil the arm E has reached its lowermost position, as shown in Fig. 3,when a tail or extension 13 on the member 5 engages a stationary post 14on the frame A, and thus causes said member to move about its pivotpoint against the pressure of the spring11,'so' as to again engagethe'brush 7 with its cooperating seg* ments 8, when the circuit is againclosed to energize the solenoid G. The solenoid exerts a sudden upwardpull on the plunger 2 and holds said brush in engagement with saidsegments 'until the circuit is broken by reason of the brush crossingthe gap beaol titi

titi:

tween said' segments. In order to limit the upward movement of saidplunger and also to dampen the shock ofthe sudden stopping thereof, Iprovide ay cushioning device lor spring 15 on .the member 5 that engagesthe post I1,4 when said member approaches the end of its upward stroke.

The .electrical lconnections between the solenoid G and-the contactsegments 8a are shown clearly in Fig. 10, wherein it will be seen that;-the supply conductors 4 are attached to the binding posts 4, or, ifdesired, to ,a'suitable receptacle, from which the positive conductor Pleads directly to one of the segments 8, and the negative conductor 4cleads to and through the solenoid G and thence to the other segment. Achoke coil H is preferably arranged in the circuit, as shown, forpreventing a destructive spark or flash vfrom occurring when the brush 7passes over the space between the seg- `ments 8a. v

InFig. 1 I have shown the motor as being attached to a clock train forthe purpose of automatically winding the main spring 16 thereof, thepinion C being at all times in mesh with the gear wheel i7 that iscontrolled by said spring. When the motor is employed, as'shown in lFig.1, to operate a piece of mechanism wherein there is practically nomomentum present to keep the driving element constantly rotating, it isnecessary to provide means for preventing retrograde movement of saidelement, the means herein shown consisting of a spring-pressed lockingpawl 18 that coperates with the ratchet wheel D, so as to prevent saidwheel from being moved backwardly when the primary actuating member ismoving on its upward stroke to store up energy in the spring F.

ln Fig. 7 I have illustrated a construction wherein the motor can beused tor various driving purposes,V and in the instance shown, the gearwheel C is substituted for the pinion C and is in mesh with a pinion i9that is mounted Aon a shaft 20, to which is connected a suitable drivingpulley 2i, or, it desired, said shaft may be rovided with a crank arm orother suitabl iving means.

W'hile I have hereinbe' ore referred to the means for moving the primaryactuating member on its .power stroke as a spring, ii wish it to beunders 'that rnyinvention is not limited to such a construction, as aweight F attached to the primary actuating member E' (see Fig. 7) couldbe substituted for the spring F previously described, said weight actingto move the primary actuating member on its power stroke by gravity.

Under certain conditions in service, yas when using alternating currentto store up energy in the primary actuating member 'il'. it is desirableto provide means for absorbing the chatter or vibration that wouldotherwise occur in the solenoid G, the means herein shown consisting ofa yielding connection between the link 3a and the plunger 2, said linkbeing provided with a slot that coperates with the pivot pin 3l in theplunger Q, and av ,coiled expansion spring 22 is connected to said linkand to said pivotpin, so that the plunger 2 is free to vibrate withincertain limits, irrespective of the link 3a.

In Fig. 8 I have shown a slightly different arrangement of the primaryactuating member and its carried parts, the member 5a that carries thebrush 7 being pivoted at 6 adjacent the outer end of` the primaryactuating member-i12, and the plunger 2 is connected to the member 5a ata point intermediate the pivot point (3 thereof and the axis ofrevolution of the member EL'. In Fig. 9 the member 5b that .carries thebrush 7 is shown as being pivotally connected to an extension 23 of theprimary actuating member E in such a manner that an upward pull onsaid'member always tends to force the brush i' into intimate contactwith the segments 8a.

From the foregoing it will be seen that I have produced a highlyefiicient motor that is very economical in its consumption of current,owing to the fact that the current is only utilized intermittently, thatis, for only one-half of the stroke of the primary actuating member, inorder to store up energy therein.

I am aware that many minor changes may be made in the construction andarrangement of the parts constituting my invention without departingfrom the spirit thereoi".

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

l. In a motor, a shaft, a driving element journaled on said shaft, aprimary actuating member that is adapted to oscillate about said shaft,means for connecting said member to said element when said meinber ismoving in one direction, a solenoid `for moving said member in theopposite direction, a pair of contacts arranged concentrically withrespect to said shatt and com-l prising two spaced metallic segments, acooperating brnsh carried by said member, an electric circuit tor saidsolenoid, which, when closed, includes said segments and cooperatingbrush as conducting parts thereof', and means for causing said brush toleave said segments so as to break said circuit during a certain periodin the cycle of operations oi the motor.

L?. in a inotor, a shaft, a driving clement journaled on said shaft, aprimary actuating member that is adapted to oscillate about said shaft,means for connecting said member to said element when said member ismoving in one direction, a solenoid for moving said member in theopposite direction, a device arranged concentrically with rcspect tosaid shaft and comprising two spaced metallic segments, a cooperatingbrush carried by said member, an electric circuit for said solenoid,which, when closed, includes said segments and cooperating brush asconducting parts thereof, means for yieldingly holding said brush vincontact with said segments to close the circuit when the member ismoving in one direction, and means for holding said brush out of contactwith said segments when said mem ber is moving in the oppositedirection.

8. In a device of the character described, a shaft, a driving elementjournaled on said shaft, a primary actuating member mounted on saidshaft, said member being adapted to oscillate about said element,meansfor connecting vsaid member to said element when said member is movingin one direction, a device pivotally mounted on said member, aspring-pressed brush carried by said device, a coperating pair ofcontacts arranged concentrically with respect to said shaft, a slot andIpin connection between said device and said member at a point outwardlyremoved from the pivot point thereof, a solenoid for moving said devicein one direction, an electric circuit for energizing said solenoid thatincludes said contacts and brush, means for automatically breaking thecircuit when said device has

